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refactor(cmdline): run the program's own commander action instead of a plan callback

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parseCmdline(ctx, program): void only adapts commander control flow to
the launcher: it parses the immutable cmdlineArgs snapshot and turns
help, version, parse errors, and action rejections into a ctx.appExit
request. App validation and the ctx.provide of the app-owned service
live in the program's own synchronous .action(), which commander runs
inside parse — program.error(...) there shares the exit path with a
grammar rejection. Deletes the CmdlinePlan export, its unread ctx
parameter, the type-unsound (() => ({}) as T) default, and the
T | undefined return with its per-caller publish guard.
This commit is contained in:
Turtle
2026-08-11 18:41:21 +08:00
parent 8e1c1faaad
commit 54dd75a969
17 changed files with 229 additions and 116 deletions
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25
packages/bundle/headless/src/startup.ts
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@@ -41,22 +41,17 @@ Examples:
}
/**
* Turn the parsed command line into the runner's task.
* @param program - the parsed headless command.
* @returns the runner's service value.
*/
function planHeadlessStartup(program: Command): HeadlessStartupValues {
const task = program.args.join(' ')
if (task.trim() === '') program.error('error: a task is required, for example: dsh --profile headless "run the tests"')
return { task }
}
/**
* Parse and provide the one-shot task as an ordinary Cordis service.
* Parse and provide the one-shot task as an ordinary Cordis service. The
* command's action publishes the task; a missing or whitespace-only task is a
* usage error, so on rejection (and on `--help`) nothing is provided.
* @param ctx - plugin context carrying the command line.
* @returns nothing once the task is provided, or when the command requested exit.
*/
export function apply(ctx: Context): void {
const values = parseCmdline(ctx, headlessCommand(), planHeadlessStartup)
if (values !== undefined) ctx.provide(HEADLESS_STARTUP_SERVICE, values)
const program = headlessCommand()
program.action(() => {
const task = program.args.join(' ')
if (task.trim() === '') program.error('error: a task is required, for example: dsh --profile headless "run the tests"')
ctx.provide(HEADLESS_STARTUP_SERVICE, { task } satisfies HeadlessStartupValues)
})
parseCmdline(ctx, program)
}